26259641 has 2 divisors, whose sum is σ = 26259642. Its totient is φ = 26259640.

The previous prime is 26259637. The next prime is 26259643. The reversal of 26259641 is 14695262.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23001616 + 3258025 = 4796^2 + 1805^2 .

It is a cyclic number.

It is not a de Polignac number, because 26259641 - 2² = 26259637 is a prime.

It is a Sophie Germain prime.

Together with 26259643, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26259643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13129820 + 13129821.

It is an arithmetic number, because the mean of its divisors is an integer number (13129821).

Almost surely, 2^26259641 is an apocalyptic number.

It is an amenable number.

26259641 is a deficient number, since it is larger than the sum of its proper divisors (1).

26259641 is an equidigital number, since it uses as much as digits as its factorization.

26259641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 26259641 is about 5124.4161618666. The cubic root of 26259641 is about 297.2324775349.

The spelling of 26259641 in words is "twenty-six million, two hundred fifty-nine thousand, six hundred forty-one".